Headphone



FIG. 1 is a perspective view of a headphone showing the new design;

FIG. 2 is a front view of the headphone shown in FIG. 1;

FIG. 3 is a back view of the headphone shown in FIG. 1;

FIG. 4 is a left side view of the headphone shown in FIG. 1;

FIG. 5 is a right side view of the headphone shown in FIG. 1;

FIG. 6 is top view of the headphone shown in FIG. 1; and,

FIG. 7 is bottom view of the headphone shown in FIG. 1.

The broken lines in the drawing illustrate portions of the headphone that form no part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 